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Category Archives for "Networking"

‘These Are Our First Roadways’: Internet Access and Self-Determination in Pu`uhonua O Waimanalo

The establishment of Pu‘uhonua o Waimānalo in 1994 was a significant milestone in the native Hawaiian movement to regain independence from the United States, which overthrew its kingdom in 1893. The United States formally acknowledged its role in the overthrow of the Kingdom of Hawaii in a law adopted by Congress in 1993 known as the Apology Resolution. A quarter of a century later, the Nation of Hawai’i is levelling up with a new effort in the push for sovereignty: community-led Internet access.

The Nation of Hawai’i is excitedly gearing up for the upcoming build and launch of Hawai’i’s first independent community broadband network in our village of Pu`uhonua O Waimanalo on the island of O’ahu.

As an early adopter of the Internet, the Nation of Hawai’i quickly recognized its potential to support sovereignty and self-determination efforts.

In 1995, the Nation of Hawai’i launched hawaii-nation.org as a way to share its history and updates about current initiatives with the world. The website housed extensive primary-source historical documents, including the constitutions and treaties of the Hawaiian Kingdom. It hoped that by providing access to lesser known parts of history, Hawaiians and supporters around the world could learn and make up Continue reading

AWS Makes It Rain, Extends Credits to Open Source Projects

The promotional credits could help projects that directly feed into AWS' all-in cloud strategy.

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Broadcom Aims to Bolster 10G PON Adoption With New Gear

Broadcom's flamboyantly named BCM68650 packs up to 16 passive optical network interfaces in three...

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Huawei Dodges German 5G Ban Despite US-Led Campaign

Germany today declined to ban any vendors from participating in the design and buildout of 5G...

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Commvault Dazzles With SaaS Backup Venture Metallic

Commvault GO kicked off with the launch of a new cloud-native data protection venture called...

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Thoma Bravo Scoops Up Sophos for $3.9 Billion

The buyout firm spent nearly $3 billion purchasing other security vendors in 2018 including...

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The Week in Internet News: China and Russia Target ‘Illegal’ Content

Content crackdown: China and Russia plan to sign an agreement to crack down on what they consider “illegal” Internet content, The Register reports. It’s unclear what the agreement will cover but critics already fear the deal will enable the two countries to further crack down on free speech. China has even effectively banned cartoon character Winnie the Pooh because some people have compared the chubby bear to leader Xi Jinping.

Eyes on you: In more censorship-related news, Thailand has ordered restaurants and Internet cafes to log the Internet histories of users, Privacy News Online says. The Thai government already requires ISPs to keep a log of customers’ Internet histories for 90 days as part of the country’s Computer Crimes Act.

Poor access: Some of the U.S. states with the lowest levels of broadband access also have the highest poverty rates, notes a report from Axios. About 30 percent of low-income U.S. residents do not have access to broadband, says the story, citing a Census Bureau report.

Not so smart: A new “smart” doorbell may literally unlock a home’s doors to hackers, according to The Daily Swig. A security researcher found that the Wi-Fi connected doorbell had no authentication Continue reading

SEC 1. Data plane and control plane protection in the networking (Nokia, Cisco and Mellanox/Cumulus) for IPv4.

Hello my friend,

This is the third article where we use the Mellanox SN 2010 running Cumulus Linux. And today we cover enormously important topic: network security. More precisely, we will speak about the data plane and the control plane protection. Cisco IOS XR and Nokia SR OS accompany us in this journey.

Thanks

Special thanks for Avi Alkobi from Mellanox and Pete Crocker and Attilla de Groot from Cumulus Networks for providing me the Mellanox switch and Cumulus license for the tests. 

Disclaimer

This blogpost is the continuation of the previous one, where we have brought the Mellanox SN 2010 to the operational with Cumulus Linux 3.7.9 on board. If you want to learn the details about this process, you are welcomed to read that article.

Brief description

Each week you can find the news describing the security breaches. In the modern economy, where the Internet plays already a key role, all the connected businesses (and almost all businesses are connected) are on the risk caused by casual network scanning and brood force attacks. In addition to that, big companies and governments are quite often the attack targets for other companies, governments and criminals. Therefore, Continue reading

New Content: EVPN on Linux Hosts and External Azure Connectivity

Dinesh Dutt added another awesome chapter to the EVPN saga last week explaining how (and why) you could run VXLAN encapsulation with EVPN control plane on Linux hosts (TL&DR: think twice before doing it).

In the last part of current Azure Networking series I covered external VNet connectivity, including VNet peering, Internet access, Virtual Network Gateways, VPN connections, and ExpressRoute. The story continues on February 6th 2020 with Azure automation.

You’ll need Standard ipSpace.net Subscription to access both webinars.

10 hot micro-data-center startups to watch

Data-hungry technology trends such as IoT, smart vehicles, drone deliveries, smart cities and Industry 4.0 are increasing the demand for fast, always-on edge computing. One solution that has emerged to bring the network closer to the applications generating and end users consuming that data is the micro data center.The micro data center sector is a new space filled with more noise than signal. If you go hunting for a micro data center for your business you’ll find everything from suitcase-sized computing stacks that replace a server closet to modular enclosures delivered by semi-trucks to larger units that reside at the foot of cell towers to dedicated edge data centers with standardized designs that can spring up wherever there’s demand and where real estate or access rights are available, including easements, rooftops and industrial sites.To read this article in full, please click here

10 hot micro-data-center startups to watch

Data-hungry technology trends such as IoT, smart vehicles, drone deliveries, smart cities and Industry 4.0 are increasing the demand for fast, always-on edge computing. One solution that has emerged to bring the network closer to the applications generating and end users consuming that data is the micro data center.The micro data center sector is a new space filled with more noise than signal. If you go hunting for a micro data center for your business you’ll find everything from suitcase-sized computing stacks that replace a server closet to modular enclosures delivered by semi-trucks to larger units that reside at the foot of cell towers to dedicated edge data centers with standardized designs that can spring up wherever there’s demand and where real estate or access rights are available, including easements, rooftops and industrial sites.To read this article in full, please click here

Docker’s Success a Foundation for Its Struggles

“In a sense, Docker is almost a victim of its own success,” said 451 Research's Jay Lyman....

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EVPN-VXLAN | Layer 3 Gateway | IRB | JUNOS

I often get asked about EVPN Layer 3 gateway options. And more specifically, what are the differences between IRB with Virtual Gateway Address (VGA) and IRB without VGA. There are many different options and configuration knobs available when configuring EVPN L3 gateway. But I’ve focused on the 3 most popular options that I see with my customers in EVPN-VXLAN environments in a centralised model. I’m also only providing the very basic configuration required.

Each IRB option can be considered an Anycast gateway solution seeing as duplicate IPs are used across all IRB gateways. However, there are some subtle, yet significant, differences between each option.

Regardless of the transport technology used, whether it be MPLS or VXLAN, a layer 3 gateway is required to route beyond a given segment.

This Week: Data Center Deployment with EVPN/VXLAN by Deepti Chandra provides in-depth analysis and examples of EVPN gateway scenarios. I highly recommend reading this book!

IRB Option 1

Duplicate IP | Unique MAC | No VGA

IRB option 1
IRB Option 1

Duplicate IPs are configured on all gateway IRBs and unique MAC addresses are used (manually configured or IRB default). Virtual Gateway Address is not used.

EVPN provides the capability to automatically synchronise gateways Continue reading

It’s crowded in here!

It's crowded in here!

We recently gave a presentation on Programming socket lookup with BPF at the Linux Plumbers Conference 2019 in Lisbon, Portugal. This blog post is a recap of the problem statement and proposed solution we presented.

It's crowded in here!
CC0 Public Domain, PxHere

Our edge servers are crowded. We run more than a dozen public facing services, leaving aside the all internal ones that do the work behind the scenes.

Quick Quiz #1: How many can you name? We blogged about them! Jump to answer.

These services are exposed on more than a million Anycast public IPv4 addresses partitioned into 100+ network prefixes.

To keep things uniform every Cloudflare edge server runs all services and responds to every Anycast address. This allows us to make efficient use of the hardware by load-balancing traffic between all machines. We have shared the details of Cloudflare edge architecture on the blog before.

It's crowded in here!

Granted not all services work on all the addresses but rather on a subset of them, covering one or several network prefixes.

So how do you set up your network services to listen on hundreds of IP addresses without driving the network stack over the edge?

Cloudflare engineers have had to ask themselves this question Continue reading

What’s it like to come out as LGBTQIA+ at work?

What's it like to come out as LGBTQIA+ at work?

Today is the 31st Anniversary of National Coming Out Day. I wanted to highlight the importance of this day, share coming out resources, and publish some stories of what it's like to come out in the workplace.

About National Coming Out Day

Thirty-one years ago, on the anniversary of the National March on Washington for Lesbian and Gay Rights, we first observed National Coming Out Day as a reminder that one of our most basic tools is the power of coming out. One out of every two Americans has someone close to them who is gay or lesbian. For transgender people, that number is only one in 10.

Coming out - whether it is as lesbian, gay, bisexual, transgender or queer - STILL MATTERS. When people know someone who is LGBTQ, they are far more likely to support equality under the law. Beyond that, our stories can be powerful to each other.

Each year on October 11th, National Coming Out Day continues to promote a safe world for LGBTQ individuals to live truthfully and openly. Every person who speaks up changes more hearts and minds, and creates new advocates for equality.

For more on coming out, visit HRC's Coming Out Continue reading

How the oil and gas industry exploits IoT

Like many traditional industries that have long-standing, tried-and-true methods of operation, the oil-and-gas sector hasn’t been the quickest to embrace IoT technology – despite having had instrumentation on drilling rigs, pipelines and refining facilities for decades, the extraction industry has only recently begun to work with modern IoT.To read this article in full, please click here(Insider Story)

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